Producing hollow quartz-glass articles.



No- 805,303. PATENTED NOV. 21, 1905-L R. KficH. PRODUGINGHOLLOW QUARTZ GLASS ARTICLES.

APPLICATION FILED NOV, 17, 1904.

(TM TED sTA Es' PATENT OFFH 11+.

RICHARD KUOH, 0F HANAU. GERMANY. ASSIGNOR To THE FIRM or W. C..HARAEUS, OF HANAU, GERMANY.

PRO DUOING HOLLdW QUARTZ-GLASS ARTICLES.

noveos sos.

'l'o all whom itinay concern.-

Be it known that I, RICHARD Kticn, "a subject of the German Emperor, and a resident of Hanan, Germany, have invented certain new and useful Improvements in Producing Hollow Quartz-.Glass Articles, of which the following is a specificatioxi'.

For producing hollow glass articles the glass-blower usually 'takes on an iron tube ID (the 'pipe) alum of "melted glass out of the glass-pot in the ace and turns the wipe. continuously while moving it backwai so as to wind the soft' glass on the tube until it hangs from aroundthe further end of the tube, after which the' operator blows for the first time throu' h the pipe tdproduce a grass Th 1 of= t;he 'l'a'ss bulb being, hoiie rerii alwaysmf'-irregu ar thickness',' the operator is 'obhgedto shape the bulb by the known marvel-mg" operation, during which the glassis exposed to a considerable cooling.

Quartzglass req'uirestofbe heated u 1 tea rature exceeding 2,000 centigra e bef0! 1t attains a soft conditionrequired for blowing. For this reason it-is im ossible to form'hollow-glas's articles from te glass in the ordinary manner in icated above. Shenstone has mentioned a method of producin hollow articles from glass; but t iis method is so very tedious as to be uite unfit for a practical manufacture. Other known methods, acoonling to which a glass tube is formed b Y melting uartz-glass around a core of carbon in an tileetric furn'aee, can only result in'the production of very dirty or unsightly articles, while it is the chief condition for the manufacture of useful wares that all impurities should be absolute-1y avoided.

M invention relates to a new method-of pro ucin 'hollow articles from quartz-glass n'f'a" sinlp e and reliable manner.

The rnethod consists in first produci tubular and clo a; uartz-glass block open at the top i e. p will now proceed to describe my new Specification of Letters Patent.-

I Application filed Novem g 17, 1904- Serial NO- 233315.

process is as-follows:

u'artz eis downward an at the bottom and of a great thick'-.

Patented Nov. 21, 1905.

method, reference being had to the accompanying drawings, in which- Figure 1 is an elevation of a solidcylindrical. quartz-glass block. Fig. 2 is a vertical central section through the same after it has been centrally drilled. .l ig.- 3 is a vertical central section through a mold and an elevation of a quartz-glass lu mp about to be pressed therein and of a die. It ig. 4 is a vertical central section through the same mold and the lump after it has been ressed and an elevation of the same die wit \in the block, and Fi 5 is a vertical longitudinal section throu' thequartz-glass'block shown at Fig. 2 an art of a quartz-glass blowpipe .to which t is block is attached.

Similar characters of reference refer to similar parts throughout the several views.

The first stage of my new method is to pro duce a tubular quartz-glass block open at the to and closed at the bottom. This may be e noted in either oftwo recesses. The first suitable lump of (iuartz 'lass is heated and softened by the l ame oi a-noxyhydrogen-blowpipe and molded in the usual manner to a solid 0 -'lin lrical block, or it may be pressed in a mo d to form asolid cylindrical block 1. (Shown at Fig. 1.) When. this block has become cold, a central hole 2 of, say, five millimeters diameter drilled into the block in its longitudinal direction. (See Fig. 2.) Thrsecond process is as follows: A round -'hodied lump 3 of quartz-glass is heated up to the lughest pesslble temperature by means of, the flame of an oxyhydrogen-blow ipe, then put over a mold 4 and pressed tlierein by means of a thin die 5, (see Fi 3,) so that the tubular block 6 in Fig. 4 is ormed of the lump 3. To facilitate the ressing of the block, the die 5 should be me, e s

can be easily withdrawn om the 'ressed block. Both the mold 4 and the d e 5 should be either covered with platina or made of platina or iridium. In either of the two processes a short tubular quartz-glass block 1 or 6 is obtained which is open at the topand closed at the'bottom-and is very thick. This tubular block 1 or 6 is then attached by melting in the ordinary manner to the end of the quartzlass blowpipe 7 (see Fig. 5) or to the end 0 any-pres htly conical, so that it ta-- cut quartz-glass tube or hollow body and 81- quartz-glass by means of the flame of an oxy- 3-5 at the to an closed at the bottom is proterward molded-or worked up with the aid of the flame of the oxyhydro n-blowpipe by heating, blowing, andhand 1 the same in substantially the mariner o ary hollow 5 glass articles are produced by the aid of the lowpi e.;

By t new method a cat variety of hollow articles may be pro need from quartz- Elassas,- for instance, tubes, stills, cruciles, retorts for chemical and ph 'sical Eurposes, vacuum iressels for electrlca and p yslcal apparatus, 800. i

What I claim as m invention, and desire to secure byLetters atent, is-

l 5 1 The herein-described method of producing hollow uartz-glass articles, which con sists in first eating and softenin a lum of quartz-glass by means of the flame of all oxyhydrogen blowpipe, then forming the lump into a; cylindrical block havin a central hole ofien at the top and close at the bottom, is ereupon attachin this tubular block by meltin'g'tothe end oia quartz-glass blowpipe and afterward moldin or work- 2 5 ing up this block with the aid of t e flame of c the oxihydrogen-blongi e as usuaL- 2. T eh'ereln-descri es method of produc- Y inghollow uartz-glass' articles, which consists first eating and softening a lump of hydrogen-blo ipe and molding it to a solid cylindrical bloc then allowing this block to i become cold, next drillinga central hole in this cold block so that a tubularbloclc open duced, er eu n attaching this tubular block"by' melting to the end of a quartz- :glass blowpipe or that of a quartz-glass tube oi-hollow body, and afterward molding or 0 'wor .up this block with the aid of the fiameo the oxyh dro en-blowpi e asusual.

3. .Theherein escrl edmeth of produchollow uartz-glass articles, which consists in first lleating and softening a lump of quartz-glass by of the flame of an oxyhydrogen-blo ipe and molding it to a solid cylindrical bloc hen allowing this'blockto i 7 become cold, next drilling a central hole of .about five millimeters diameter in this cold 1 Letters Patent N ol 805.303.

Correctionv in block, so that a short tubular block open at the to and closed at the bottom and of great t 'ckness is produced, thereupon attaching this tubular block by melting to the end of a quartz-glass blowpipe or that of a quartz-glass tube or hollow body, and afterward lnoldin or'working u this block with the aid of t e flame 0 th s oxyhydrogenblowpi as usual.

4. T eherein-described method of producing hollow sists in first eating and softening a lump of quartz glass by means of the flame of an oxyhydrogen-blowpipe, then pressi it in a mold to form a solid cylindrical b ock, next drilling a central hole into this solid block when cold, so that a tubular block open at the top and closed at the bottom is produced, thereupon attaching this tubular block by melting to the end 'of a. quartz-glass blowipc or that of a quartz-- lass tube or hollow 0 body, and afterward mo din or wor up this block with the aid of t 0 flame the oxyhydro en-blowpipe as usual.

5. The erein-described method of producing hollowuartz-glass articles, which conneat-ing and softening a lump of quartz-glass by means of the flame of an oxvhydrogen-blow ipe, then pressing it in a mold to form a soli cylindrical block, next'drilling a central hole of about five millimeters diameter in this solid block when cold, so that a short tubular block open at the top and closed at the bottom and of great thickness is produced, thereupon atwlhin this tubular block by melting to the end of a (-uartz-glass blownipe or that of a quartzlass tube or hollow body, and afterward molding or VJUl'l-illl" up this block with the aid n the flame o the oxyhydrogcn-lllowpipe as usual. A

In testimony whereof I have signed my name to this specl ficatlon in the presence of two subscribing witnesses.

- "RTCH'ARD KUCH.

Witnesses: FRANZ 'Hnssmcnas, Enwm DIPPEL.

It is hereby certified me the name of the aasignee in Letters rem: 210.805303, granted November 21, 1905, upon the application of Richard Kiich, of Hanan, Germany, for an improvement in fioducing Hollow Articles, was arm heously written and printed "the'firm of W. C. Hal-acne, whereas the maid name should havebeen written and printed the firlil of 0. HM; and, that the said i Patent should be read with this jcorrectiolitherein that the same may canform to the record of the case in the Patent Oflice. Signed and sealed this 5th day of December, A.. IL, 1905. v I I F. 1., ALLEN,

Commissioner of Patents.

u'artzglass articles, which con- 60.

quartz-glass by means of the flame of an oxy- 3-5 at the to an closed at the bottom is proterward molded-or worked up with the aid of the flame of the oxyhydro n-blowpipe by heating, blowing, andhand 1 the same in substantially the mariner o ary hollow 5 glass articles are produced by the aid of the lowpi e.;

By t new method a cat variety of hollow articles may be pro need from quartz- Elassas,- for instance, tubes, stills, cruciles, retorts for chemical and ph 'sical Eurposes, vacuum iressels for electrlca and p yslcal apparatus, 800. i

What I claim as m invention, and desire to secure byLetters atent, is-

l 5 1 The herein-described method of producing hollow uartz-glass articles, which con sists in first eating and softenin a lum of quartz-glass by means of the flame of all oxyhydrogen blowpipe, then forming the lump into a; cylindrical block havin a central hole ofien at the top and close at the bottom, is ereupon attachin this tubular block by meltin'g'tothe end oia quartz-glass blowpipe and afterward moldin or work- 2 5 ing up this block with the aid of t e flame of c the oxihydrogen-blongi e as usuaL- 2. T eh'ereln-descri es method of produc- Y inghollow uartz-glass' articles, which consists first eating and softening a lump of hydrogen-blo ipe and molding it to a solid cylindrical bloc then allowing this block to i become cold, next drillinga central hole in this cold block so that a tubularbloclc open duced, er eu n attaching this tubular block"by' melting to the end of a quartz- :glass blowpipe or that of a quartz-glass tube oi-hollow body, and afterward molding or 0 'wor .up this block with the aid of the fiameo the oxyh dro en-blowpi e asusual.

3. .Theherein escrl edmeth of produchollow uartz-glass articles, which consists in first lleating and softening a lump of quartz-glass by of the flame of an oxyhydrogen-blo ipe and molding it to a solid cylindrical bloc hen allowing this'blockto i 7 become cold, next drilling a central hole of .about five millimeters diameter in this cold 1 Letters Patent N ol 805.303.

Correctionv in block, so that a short tubular block open at the to and closed at the bottom and of great t 'ckness is produced, thereupon attaching this tubular block by melting to the end of a quartz-glass blowpipe or that of a quartz-glass tube or hollow body, and afterward lnoldin or'working u this block with the aid of t e flame 0 th s oxyhydrogenblowpi as usual.

4. T eherein-described method of producing hollow sists in first eating and softening a lump of quartz glass by means of the flame of an oxyhydrogen-blowpipe, then pressi it in a mold to form a solid cylindrical b ock, next drilling a central hole into this solid block when cold, so that a tubular block open at the top and closed at the bottom is produced, thereupon attaching this tubular block by melting to the end 'of a. quartz-glass blowipc or that of a quartz-- lass tube or hollow 0 body, and afterward mo din or wor up this block with the aid of t 0 flame the oxyhydro en-blowpipe as usual.

5. The erein-described method of producing hollowuartz-glass articles, which conneat-ing and softening a lump of quartz-glass by means of the flame of an oxvhydrogen-blow ipe, then pressing it in a mold to form a soli cylindrical block, next'drilling a central hole of about five millimeters diameter in this solid block when cold, so that a short tubular block open at the top and closed at the bottom and of great thickness is produced, thereupon atwlhin this tubular block by melting to the end of a (-uartz-glass blownipe or that of a quartzlass tube or hollow body, and afterward molding or VJUl'l-illl" up this block with the aid n the flame o the oxyhydrogcn-lllowpipe as usual. A

In testimony whereof I have signed my name to this specl ficatlon in the presence of two subscribing witnesses.

- "RTCH'ARD KUCH.

Witnesses: FRANZ 'Hnssmcnas, Enwm DIPPEL.

It is hereby certified me the name of the aasignee in Letters rem: 210.805303, granted November 21, 1905, upon the application of Richard Kiich, of Hanan, Germany, for an improvement in fioducing Hollow Articles, was arm heously written and printed "the'firm of W. C. Hal-acne, whereas the maid name should havebeen written and printed the firlil of 0. HM; and, that the said i Patent should be read with this jcorrectiolitherein that the same may canform to the record of the case in the Patent Oflice. Signed and sealed this 5th day of December, A.. IL, 1905. v I I F. 1., ALLEN,

Commissioner of Patents.

u'artzglass articles, which con- 60.

It is hereby certified that the name of the assignee in Intters Patent No. 806,303, granted November 21, 1905, upon the application of Richard Kiich, of Hanan, G0?- Producing Hollow QuamGlaas Articles,"

the said name many, for an improvement. in was erm- "tbe firm of W. C. Humans," whereas aw of W. 0. [Ia-am; and that the said the same may 0onbeoudy written and printed should hav e been written and printed the Letters Palent ahnuld be read with this correctiafi theizin that form (,0 m6 ream-d n. the case in the Patent, Ofiice.

Signer, and FP-Zlcd this 6th d8) 0 Dev-mil "1 D, 1905.

[SEAL] F. I. ALLEN.

Com-mfimbncr of Puma. 

